Hands-free tailgate/trunk open

[Aliaksandr]

As far as I know, it does not work without the keyless entry.  The cars with keyless entry, there is an antenna in the trunk behind the plastic cover inside the trunk under the locking hatch.    but it's easy to test. 
I tested with my car; I unlocked the car first and left the key inside the house. I went to trunk and tried to open it with the foot sensor and it did not work but I could open the trunk by using the button on the top of the license plate while the car was still unlocked.

Thank you. It works for me too. I'm going to install keyless entry.